Machine for cutting, raveling, and cleaning carpet-strips.



No. 66l,605. Patentd Nov. I3, 1900. A. HAFTER.

MACHINE FUR CUTTING, RAVELING, AND CLEANING CARPET STRIPS.

(Application filed Nov. 27, 1899.)

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(Application filed Nov. 27, 1899.]

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A. HAFTER. V MACHINE FOB CUTTING, RAVELING, AND CLEANING CARPET STRIPS.

(Application filed Nov: 27, 1899.)

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UNITED STATES PATENT OFFICE.

ADOLPH HAFTER, OF CHICAGO, ILLINOIS.

MACHINE FOR CUTTING, RAVELING, AND CLEANING CARPET-STRIPS.

SPECIFICATION formingpart of Letters Patent No. 661,605, dated November 13, 1900.

Application filed November 27, 1899. Serial No. 738,431. (No model.)

To all whom it may concern:

Be it known that I, ADOLPH HAFTER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois,have invented a new and useful Machine for Cutting, Raveling, and Cleaning Carpet-Strips, of which the following is a specification.

My invention relates to means for cutting textile fabrics into strips and then removing a portion of the warp-threads at the sides of the strips, so as to produce raveled or fimhriated edges, which adapts the strips to a variety of uses in the manufacture of many kinds of fancy goods; and my object is to produce a machine for this purpose which is more particularly adapted to be operated upon carpet or other similar heavy fabrics, as is hereinafter more fully described, and illustrated in the accompanying drawings, in which Figure l is a side elevation showing the manner of mounting and gearing together the principal operative parts. Fig. 2 is a vertical longitudinal section on broken line 2 2 of Fig. 4. Fig. 3 is a plan of a piece of carpet, showing a cut and an uncut portion and also a portion which has been raveled and cleaned, so as to show'fimbriatededges. Fig. 4 is a cross-section on broken line 4 4 of Fig. 2. Fig. 5 is a detail section, on broken line 5 5, Fig. 2, of the rotary cutting or slitting knives which cut the carpet into strips, and this section also shows aportion of the bed-plate and a portion in front side elevation of one of the rollers above the bedplate, which is provided with narrow circumferential grooves into which the edge portions of the rotary slittingknives operate. Fig. 5 is a vertical crosssection of a small portion of the bed-plate, on a larger scale than what is shown in 'Fig. 5, to plainly illustrate the grooves and slots therein, for the purpose as is more fully described hereinafter. Fig. 6 is a detail section, on line 6 6, Fig. 4, to illustrate the roller-cutters for cutting out the warp-threads at each edge of the strips of carpet. Fig. 7 is a detail on broken line 7 7, Fig. 6. Fig. 8 is a plan of a portion of a finished strip of carpet, showing the remaining longitudinally-disposed warpthreads and the laterally-projecting woofthreads which form the fimbriated edge.

Similar letters indicate like parts through out the several views.

Mounted in bearings at each side of the top portion of the main supporting-frame A of the machine and above the bed-plate are nine rollers B, B, B B B B B B and B Below bed-plate A are mounted in bearings one transverse shaft 0 and a roller D. Each of the rollers from B to B inclusive, is grooved circumferentially, as at E, Figs. 2, 4t, and 5. Registering with each groove in the rollers are longitudinal grooves F in bed-plate A, as shown in Figs. 2, 5, and 5. The rollers above bed-'plate A from 8 to B inclusive, with the exception of roller B are mounted in boxes at each end, which are yieldingly held from rising from the bed-plate by means of short rubber springs 13*, Fig. 1, the general faces of the rollers being held in close proximity to the bed-plate. Roller B is mounted in boxes, which are yieldingly held from lifting by the springs O and 0 Transverse roller D is mounted directly under roller B and in contact with it. Transverse shaft C is mounted below the bed-plate and on a vertical line between rollers B and B Upon transverse shaft G are mounted several disk or rotary knives G, Figs. 1, 2, and 5, and these knives project above and through slots in the bed-plate A and into narrow grooves H, disposed circumferentially in rollers B and B.

Rotary knives G are separated a distance equal to the width of the narrow strips of carpet to be cut.

a In Figs. 1, 2, and 6 are shown flexible belts Lwhich after passing over adjustable tensionpulleys J at the top of the machine-frame are disposed in grooves E in the front roller B, thence along the top of the bed-plate and under and in all the grooves E of the several rollers from B to 13', inclusive, and thence upwardly to the guide-pulleys. Each one of the belts I is provided with a series of sharp projections I,which project downwardly into the longitudinal grooves F of the bed-plate.

Roller D below the bed-plate hasasmooth surface, but roller B directly above is provided with several series of longitudinal cutters L, which contact the lower roller at each side of each of the belt-grooves E.

Roller B is provided with a series of fine spring-teeth M at each side of the belt-grooves.

In this instance the machine is shown as driven by means of abicycle' pedal-crank movement operated by the feet, the operators seat not being shown, buti-s located at the front or left-hand end of the machine (illustrated in Fig. 1) at the proper distanceand height relative to the pedals. Onthe pedal-shaft is securely mounted a large drivepulley N, which is connected by means of' a belt N to a small pulley upon a shaft, upon which is also mounted a large pulley 0-, and this latter pulley is geared by a belt todri ve' the transverse shaft C and the knives G: at a high rate of speed. A transverse shaft P isgeared by means of a chain and chain-wheels to the pedal-shaft, and by other chain-s Q and R shaft P is connected to drive the series: of rollers from B to B inclusive. Roller 13, With its fine spring-teeth,isdriven at a higher rate of speed than the other rollers,as is shown in Fig. 1,where asmaller chain-wheelis shown mounted at the end of the roller-journal B than at the ends of the journals of the other rollers.

In operation power may be applied in the manner hereinbefore indicated or in any other manner, so that all the rollers from B to B inclusive, and the rotary knives: G are-re volving in the direction indicated by the arrow on roller B, Fig. 2. If new the end of apiece of carpet or other fabric to be operatedupon is inserted under the first ro-l led B',-it will: be engaged by the teeth I ofthe belts B and carried longitudinally along the bedpl'ate A and u-nder'all the-rollers from B to-B inclusive. During the passageof the fabric over the bed-plate the series of rapidly-revolving knives G accurately slit the carpet into strips of a width equal to the space'hetweenthe edges of the knives. The carpet in: its longitudinal movement over the bed:- plate passes between lower smooth roller D and the several series of longitudinal cutters." on roller B and sincethese cutters have the outer ends projecting far enough to contact the surface of roller D the warp-threads at each side edge of each of the strips, according to the length of the cutters, are cut into shortlengths equal to the pitch of the outer ends of cutters L, Figs. 2 and 7. After the side warp-threads are cut the rearward movement of the carpet-strips causes them to pass under the several series of spring-teeth on roller B and since the outer ends of these teeth travel faster than the movement of the carpet-strips the teeth serve as brushes to# sweep out from among the l-aterall-y-projech' ings uncut woof-threads all the short fibers of the cut warp-threads and leave the strips with the fimbriated edges. (Shown in Fig. 8,

which plainly illustrates the desired result to be attained.) When the strips have been cut and the'edges raveled, as described, they pass out of the machine from under roller B and down upon apron A and into any desired receptacle.

To prevent; the prepared strips from being carried up from the bed-plateorapron by the action of theteeth I of belts I when the strips are being ejected from the machine, the roller B- is provided with a peripheral brush-cover- ,ing, and since roller B is disposed close to roller B and the brush-face of roller B revolves in a contrary'direction to the adjacent face of roller B and the belts thereon the strips, if they should rise with teeth I, would be brushed downwardly upon apron A The roller B isrnade to revolve at a higher rate of speed than roller- B by being geared to roller B by means of a chain belt, in this instance on the opposite side of the machine,-

(shown in Figs. 1 and 2' and: indicated by the letter T in both these figures.)

I claim as my invention 1. Ina machine for cutting, ravelin-g and cleaning carpet-strips, a feeding mechanism therefor comprisinga bed-plate providedwith a series of longitu di nal grooves, aseries of rollers mounted transversely above-thebed-plate and provided with circumferentiali grooves registering with the longitudinal grooves of the bed pla-te, belts adapted to travel above the bed-plate and having projections which jut into the longitudinal grooves, the said belts being located in the grooves of the roll ers, andhaving motion imparted thereto by contact therewith, whereby a-stri p of carpet is carried along the bed-plate under the: rollers, and parallel with the groovesinthe bed- 1 plate, for the purpose stated.

2:.- In a machine for cutting, raveling and cleaning carpet-strips, aslitting mechanism therefor comprising abed-plate having a-series of parallel longitudinal slots theret'hrough, a revolu ble: shaft mounted below the bedplate, circular knives mounted on the shaft and projecting upwardly through the slots and above the surface of the bed-plate, rollersIn-ountedtransversely of and above the bed-pl-ate-,therebein gccircu-mferential grooves in the rollers, feed-belts in the groovesof the rollers in contact with the surface of the bedplate, andother circumferential grooves be tween the first-named grooves in which edge portions of the circular knives are disposed, substantially asstated.

The combination in? amachine for cutting, ravelin g and cleaning carpet-strips, having a feed mechanism comprising a bed-plate provided with aseriesof longitudinal grooves,

T aseriesof rollers mounted transversely above rotaryspring-toothed cleaning-wheel adapted 10 to remove the warp-thread cuttings, in the manner and for the purpose substantially as hereinbefore stated.

ADOLPH HAFTER.

Witnesses:

OSCAR SNELL, H. L. BROWN. 

